Quantitative Aptitude Flashcards
6 cards from real SSC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Quantitative Aptitude flashcards as text
Two numbers are in the ratio 3:5. If their sum is 160, what is the larger number?
Answer: 100
Larger number = (5/8) × 160 = 100.
A car covers a distance of 600 km in 6 hours. How much distance will it cover in 9 hours at the same speed?
Answer: 900 km
Speed = 100 km/h; in 9 hours distance = 100 × 9 = 900 km.
What is the compound interest on Rs. 5000 at 10% per annum for 2 years?
Answer: Rs. 1050
CI = 5000[(1.1)² − 1] = 5000[1.21−1] = 5000×0.21 = Rs. 1050.
If 20% of a number is 50, what is 30% of that number?
Answer: 75
Number = 50/0.20 = 250; 30% of 250 = 75.
The radius of a circle is doubled. By what percentage does its area increase?
Answer: 300%
New area = π(2r)² = 4πr², which is 4 times the original; increase = 300%.
Pipes A and B can fill a tank in 6 hours and 9 hours respectively. Pipe C can empty it in 12 hours. How long to fill the tank if all are open?
Answer: 36/5 hours
Net rate = 1/6 + 1/9 − 1/12 = 6/36 + 4/36 − 3/36 = 7/36; time = 36/7 ≈ 5.14 h, approximately 36/7.